Subtract 63/7 from 1/40, Solve 1/40

Subtract 63/7 from 1/40

1^st number: 1/40, 2^nd number: 9 0/7

1/40 - 63/7 is -359/40.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 7 is 280

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 40 × 7 = 280,
1/40 = 1 × 7/40 × 7 = 7/280
Likewise, for the 2nd fraction, since 7 × 40 = 280,
63/7 = 63 × 40/7 × 40 = 2520/280
Subtract the two like fractions:
7/280 - 2520/280 = 7 - 2520/280 = -2513/280
After reducing the fraction, the answer is -359/40

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